Great products and wonderful staff. I watched on YouTube the top five customer picks. And I wanted to try the ones I didn’t have. They write and weight are different but great pens.
Superior and well made. Compared with several other versions and definitely warrants the term standard international as it fits so many different pens perfectly
The convertor fits the pen I got it for: Kaweco Perkeo.
I have ordered a few of these. It consistently works with the pens that it says it fits.
Quality product I use in most of my pens!